Equipment secret recipe, although each ancient book has the same name, but its serial number in the background is different, so you can open the corresponding secret recipe in the back library, so once you have the same serial number, it will be automatically eliminated by the system and only one will be kept.

The specific process: enter the Eldner map, go to the new Rydsa city, enter the library and find the librarian;

1. Beat monsters in the process of exploring the maze and get some ancient books;

2. After entering the library, the system will automatically hand over the ancient books you own to the librarian, and after the translation is completed, the ancient books will be put on the shelves;

3. Find the librarian and select "Browse Bookshelf" so that you can read all kinds of ancient books on the bookshelf;

4. Every ancient book records the formula of a purple equipment or weapon;